The FCA has found that some firms have been using their FCA authorisation status in a promotional way. This is against FCA rules and any firms that have used their status in this way should cease doing so.
The FCA has issued a statement reminding firms about their obligations when communicating with clients, and strongly encouraging firms to review their websites and financial promotions. Where adverts refer to the FCA and use images or symbols, firms must ensure that these adverts comply with requirements. Use of the FCA’s logo, without permission, is not allowed. If the FCA identifies firms breaching its rules then it will take action.
https://www.fca.org.uk/news/newsletters/regulation-round-july-2018